170 UNGKA APE. 



the thoracic viscera were found perfectly healthy, 

 and differing from the orang-utan,* in being 

 subdivided on each side, the right lung having 

 three, and the left two lobes, as in the human 

 subject. The lungs were perfectly free from 

 tubercles ; the spleen was healthy, of small size, 

 and lobulated at one extremity ; the liver was 

 large and healthy ; the difference in size between 

 that organ and the spleen was considerable, in 

 comparison with the relative proportions of those 

 organs in the human subject. Mr. Owen does 

 not remark, in the dissection of the orang-utan, 

 whether this difference of size in the two organs 

 exists also in that animal ; the gall-bladder con- 

 tained a small qviantity of dark, thick, and 

 viscid bile ; several of the mesenteric glands 

 were enlarged, some being of a white, others of 

 a dark colour. 



On laying open the duodenum, it was found 

 to contain a quantity of mucus, slightly tinged 

 with bile ; the colon and caecum were full of 

 liquid bilious foeces, mixed with mucus, and 

 several small ulcerated patches were seen on the 

 inner surface, and a dark spotted appearance at 



* The lungs in the orang-utan are entire on each side, 

 and not divided into lobes. See my friend Mr. Owen's 

 Dissection of the Orang-utan, in No. I. of the Proceedings of 

 the Zoological Society of London. 



